<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8"/>
        <title>
            水球图绘制
        </title>
        <style>
            html,body{
            margin : 0;
            padding:0;
            }
            canvas{
            height:400px;
            width:600px;
            background-color:white;
            }
        </style>
    </head>
    <body>
        <canvas id="canvas">
        </canvas>
        <script src="liquid.js">  </script>
    </body>
</html>
